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September 9, 2015 By

“ENGRAVED BY [Butler & Carpenter] PHILADELPHIA” on one line with “Plate No.” on the line below. This was usually followed by the plate number and usually a letter, but does occur without a plate number.
The words “Butler & Carpenter” are in white on a colored tablet, other parts of the imprint are in color. This was the most common imprint used on the first issue of revenue stamps.